From 731151b014df840b2d71b544a37f741848ec914f Mon Sep 17 00:00:00 2001
From: qbisi <qbisicwate@gmail.com>
Date: Sat, 24 Jan 2026 06:29:49 +0800
Subject: [PATCH] python3Packages.adios2: link against installed libraries

---
 pkgs/by-name/ad/adios2/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/ad/adios2/package.nix b/pkgs/by-name/ad/adios2/package.nix
index 82c460835b13..d3556d4cc9af 100644
--- a/pkgs/by-name/ad/adios2/package.nix
+++ b/pkgs/by-name/ad/adios2/package.nix
@@ -183,6 +183,11 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeFeature "CMAKE_INSTALL_PYTHONDIR" python3Packages.python.sitePackages)
   ];
 
+  # python binding libraries should be linked against installed libraries
+  preInstall = lib.optionalString pythonSupport ''
+    export adios2_DIR=$out/lib/cmake/adios2
+  '';
+
   # Tests are time-consuming and moved to passthru.tests.withCheck.
   doCheck = false;
   dontUseNinjaCheck = true;